29 lines
623 B
Rust
29 lines
623 B
Rust
use std::collections::HashMap;
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use crate::ast::ItemId;
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use crate::tokenizing::Location;
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/// Maps top-level declarations to Locations in source code, to detect
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/// multiply-defined top level items.
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pub struct DeclLocations {
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map: HashMap<ItemId, Location>
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}
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impl DeclLocations {
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pub fn new() -> Self {
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Self { map: HashMap::new() }
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}
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pub(crate) fn add_location(&mut self, id: &ItemId, loc: Location) {
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self.map.insert(id.clone(), loc);
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}
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pub(crate) fn lookup(&self, id: &ItemId) -> Option<Location> {
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match self.map.get(id) {
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Some(loc) => Some(loc.clone()),
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None => None
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}
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}
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}
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